Acoustic Solutions

Test Cells

Test Cell systems are optimized for aero - acoustic performance based upon the configuration
and test requirements of the customer. Test Cells can be provided as modular, containerized
or demountable units dependent on the user requirements. For larger facilities alternate
approaches are offered; a weather proof portal structural steel frame that supports
the acoustic panels or a structural acoustic wall and roof panel system. Facilities
include control and equipment rooms as required together with silencers for the
equipment and engines. Doors are provided to enable ease of access for equipment
and operational requirements. A range of windows including bullet resistant glass
can also be provided to enable testing to be monitored.

Personnel Rooms and Equipment Enclosures

Rooms and enclosures are custom configured to suit customer requirements using pre-engineered
wall and ceiling panels, doors, windows and silencers. To insure that requirements
are met; isolated floors, access panels, removable wall and ceiling panels are provided
where necessary.

Rooms and enclosures can be assembled on-site, or shipped to the customer as assembled
units or modules. Modular and pre-assembled units are provided with fork lift or
crane lift points as required. Window options include double-glazed safety glass,
wire glass, polycarbonate, or bullet resistant glass and may be installed straight
or sloped. Door options include single-leaf, double-leaf or sliding, with or without
windows. Silencers as required for ventilation or equipment needs that maintain
the acoustic requirement of the customer are also supplied.

As required units can have factory installed, computer and raised floor systems,
electrical and lighting systems, HVAC systems and plumbing designed to meet customer
requirements.

Rooms and enclosures are constructed using wall and roof panels with numerous options
including 16 or 12 gage solid skin, 16 or 22 gage perforated face sheets, carbon
steel, galvanized steel, or stainless steel or special bullet-resistant construction.
A range of acoustical performance requirements can be achieved, normally STC 40-56
though higher performance can be provided as necessary. The panel construction provides
a Thermal Insulation Value of R-14 and higher. The interior and exterior can be
finish painted in accordance with customer color preferences.

Weatherproof Units are supplied for external applications. All materials are acoustically
rated by independent testing laboratories to ensure the appropriate noise reduction
for every application including:

Control Rooms

Equipment Rooms

Test Rooms

Instrumentation Enclosures

Computer Equipment

Factory Offices

Personnel Rooms

Process Controls

Quality Control Functions

Guard Houses

Barrier Walls

Barrier Walls are normally used to place a sound barrier between a noise source
and a target population. The barrier creates a "sound shadow" zone that reduces
the unwanted noise and can be tailored to cover almost any size area either indoors
or out, for ground mounted or rooftop applications.

Absorptive noise control barriers provide maximum noise reduction with lightweight
modular panels and/or louvers. The noise barrier system is easy to install and if
used for temporary applications are easy to dismantle and relocate. Panels and louvers
are self-draining and constructed of galvanized steel or aluminum and finish painted
in a weather resistant polyester powder coating in customer specified colors. The
finish is also graffiti resistant and cleanable. A 10 year warrantee is offered
on barrier systems.

Panels can be mounted horizontally or vertically with joint overlap options to suit
customer needs. Varying thicknesses of panel are also offered from 2 – 5”, together
with combinations of solid/solid or perforated/ solid face sheets. All products
independently tested (STC 37 and above, NRC 0.95 and above).

An existing wall can be lined with sound-absorbing cladding panels as an effective,
cost-efficient method of reducing reflected sound.

Services include layout, structural steel support framework, foundation design (for
ground level barriers), with certified calculations including P.E. or S.E. stamp
as required. Uses include new construction or retrofit to an existing structure
for the following:

HVAC Mechanical Equipment

Power Plants

Rail Yards

Generators

Transformers

Manufacturing Facilities

Wall Lining Finishes

Two basic types of liners are available depending on the use requirement. For industrial
applications that involve equipment in ambient environmental conditions metal panels
are offered. For personnel areas in controlled environments cloth covered panels
are offered.

Metal Wall Lining Panels

Durable perforated metal acoustic panels designed to control reverberation and reduce
noise. Available in a range of finishes to suit customer requirements.

Generator Enclosures

Mechanical Rooms

Waste Water Treatment

Corridors

Cloth Wall Lining Panels

Custom made cloth covered acoustic fiber panels reduce reverberation for use in
personnel areas with controlled environments. Panels are available with embossed
finishes and a range of colors to suit customer requirements. Easy installation
and removal.

Personnel Rooms

Control Rooms

Offices

Guard Houses

Windows

Window units are completely factory assembled including the installation of liner
panels (powder-coated perforated steel or fabric), glazing and glass stops. The
result is a window that leaves the factory as a finished product ready to install
without the need to remove the glazing. Window options include custom sizes in both
vertical and sloped glass configurations giving guaranteed acoustic performance.

All windows units are manufactured and assembled in a controlled environment and
are available as fixed frame or split-frame systems to enable easy installation
for a wide variety of site requirements in both new build and retrofit applications.

Windows can be manufactured to meet multiple requirements;ballistic ratings,blast,pressure
and fire. STC rating from 48 to 57 and higher are available.

Submittal packages include the drawings, test data and easy to follow step-by-step
installation instructions to allow your personnel to install the windows if desired.

Window applications include:

Control Rooms

Engine Test Cells

Mechanical Rooms

Machinery Enclosures

Factory Offices

Personnel Rooms

Guard Houses

Doors

Vertical Lift Doors

Vertical Telescope & Sectioned Doors provide exceptional security, reliability and
efficiency for interior or exterior applications. The simplified design eliminates
the need for counterbalance systems, hinges and pivot points. The compact unit requires
little head space and side clearance. The enclosed in-header drive system mounts
neatly above the curtain and has minimal projection. All operating mechanisms are
neatly housed within the assembly, resulting in a finished, uncluttered look. Baked
on acrylic finishes are available in standard and custom colors together with the
option of Stainless Steel panels. The use of inverted steel panels and a locking
bottom beam curtain panel; together with Teflon® strips that separate the contact
surfaces areas and provide quiet, weather-tight operation as the door operates,
provides unmatched security performance and is perfect for extreme weather and wind
pressure Applications to 50 lb/ft2. In the event
of damage occurring to the panels they can be individually removed and repaired
or replaced with minimal downtime.

Double wall construction provides an excellent U-Value of 0.51and ASTM E-283 leakage
tests conducted show 0.93cfm/l in.ft of perimeter and no air leakage through the
curtain with wind speeds at 25mph.
Sound reduction STC ratings of 29 and 51 are offered.

Safety features include safety stops, safety reversing edge and auto reverse. Various
options for size, finish and operating speeds are available on request.

Horizontal Sliding Doors

Doors are constructed with durable 12 gauge and 16 gauge steel face sheets and provide
a sound reduction rating of STC 51 as verified by independent laboratory tests.
For exterior applications durable weather resistant finishes are available. Heavy
duty track and trolley systems incorporate two-way adjustable steel rollers with
stainless steel ball bearings for smooth horizontal and vertical operation during
opening and closing. The system design allows for multi-directional adjustment of
the leaf during installation to enable alignment requirements to be met. The doors
utilize a design of non-pneumatic seal that is automatically engaged and disengaged
with the locking system to insure that the seals are uniformly and continuously
compressed around the door perimeter to prevent sound leaks when the door is closed.
Seals can be adjusted without the need to remove the door.

As required doors can incorporate electrical motor operation with variable speed
operation and UL listed control panels complete with 3-wire “fail-safe” reversing
edge. Single leaf and bi-parting leaf options are available, as are custom sizes.

Doors are suited for a variety of applications including:

Machinery Enclosures

Mechanical Equipment Rooms

Test Rooms

Engine Test Cells

Test Laboratories

Spray booths

Swing Doors

Swing doors are available in single-leaf, double- leaf and bi-fold configurations
to suit the project specification dimensional, acoustic and operational requirements.
Personnel door configurations conform to ADA requirements for ease of operation.
All door and frame components are factory assembled and tested as a complete assembly
prior to shipment.

Factory assembly includes the installation of all seals, hinges, hardware and glazing
as required. On arrival at site the door is ready for fast and easy installation.
Doors feature Cam lift hinges and adjustable mortised bottom seals to adapt to site
floor conditions and are available as fixed or split frame assemblies to enable
installation to suit the site installation requirements including existing openings.

All door design configurations are tested for acoustic performance at an independent
NVLAP approved testing facility and manufactured under strict quality controls to
guarantee the acoustic performance meets the customer specification.

Door Submittal packages include the drawings, test data and easy to follow step-by-step
installation instructions to allow your personnel to install the door systems with
professional installation services available as required.

Door System Highlights include:

Completely factory assembled door system

Single source responsibility for seal, hardware and glazing installation

Easy and fast on-site installation.

Proven laboratory and field performance

Design flexibility to give custom size, configurations and finish

Single-Leaf, Double-Leaf or Bi-Fold Designs are suited to a number of applications
including:

Mechanical Equipment Rooms

Machinery Enclosures

Control Rooms

Test Facilities

Test Cells

Secure Areas

Sensitive Compartmented Information Facilities (SCIF)

Test Laboratories

Silencers

Silencer designs for ambient air and gases at elevated temperatures, configured
as rectangular baffles or conical bullets, with or without casings for new or retrofit
projects are provided to suit customer requirements. Silencers are manufactured
using materials to suit the environmental service and aero-acoustical requirementsto
minimize pressure drop. Heavy gage silencers for industrial/power generation and
aviation jet test cells can also be supplied. Dependent on the service application;
glass fiber, mineral wool and basalt are used as the acoustic medium which is wrapped
in glass cloth suited to the operating temperature. Internal supports and frame
design insure structural integrity is maintained. As required various types of rain
hoods can also be provided. Finishes are selected to resist the particular environment
of each application.

Advanced Nozzle Dilutors

EFS LLC offers Advanced Nozzle Dilutor assemblies for a wide range of applications
is a cost effective alternative to the requirement of a tall stack normally used
to disperse noxious exhaust gases. Tall stacks have the associated issues of cost,
construction and height restrictions imposed under zoning by-laws. This often results
in short stacks being used for most applications that fail to adequately disperse
the exhaust gases due to low level atmospheric conditions and adjacent structures
such as buildings, trees and fences.

Adding an Advanced Nozzle Dilutor (AND) compensates for the disadvantages of a short
stack using a Patented 3-Dimensional design configuration to induce ambient fresh
air to decrease the gas concentration and accelerate the exhaust gases to a higher
altitude before dispersal to atmosphere.